Ask Your Question

Feedback on my GDM model

asked 2023-06-02 01:13:51 +0200

this post is marked as community wiki

This post is a wiki. Anyone with karma >5 is welcome to improve it.

Dear CROCO community, best regards.

I have been working on my model for the GDM. I can't get the SSH and Loop Current (LC) simulated by my model to fit better based on satellite data. I have changed my parameters for horizontal viscosity and vertical mixing several times, but I don't see noticeable changes. My model has no data assimilation, although I would expect to see a better representation of the LC. I have assumed a year of model spin-up before analyzing the results. Below are the parameters of my model:

image description

Below I share a few results and the satellite product, with which I am making the comparison.

CROCO is the figure on the left.

image description

I understand that DUACS is The absolute dynamic topography and the scale of values is not the same. Therefore, I have additionally compared with GLORYS reanalysis. As the simulation runs more, the simulated LC has a different behavior than the satellite. In addition to the presence of several eddies that do not come out in the satellite.

Please let me know your opinions and recommendations to improve my model.

Thanks for your support!

Regards, César.

edit retag flag offensive close merge delete

1 answer

Sort by » oldest newest most voted

answered 2023-06-02 07:36:43 +0200

As mesoscale ocean dynamics are highly nonlinear, the model cannot be expected to match the data of a given day without data assimilation. We can only compare statistics, i.e. the variance of the SSH over several years. An easy alternative to data assimilation is to relax T,S in CROCO to GLORYS data using the ROBUST_DIAG method.

edit flag offensive delete link more
Login/Signup to Answer

Question Tools

1 follower


Asked: 2023-06-02 01:13:51 +0200

Seen: 162 times

Last updated: Jun 02